Many thanks again!
The tables annuelles are still by Arrondissement. I have the address from AFTEr the war, just not sure before. In any case, for the years of 1937, 38, 39, 40, I cannot find their marriage in the likely arrondissements. I will continue to look in the others, but expect to find the ifnormation in the Naturalisation file, from the Archives Nationales. Which are just now being moved! and likely aailable again within one month.
Marta'a card from Mannheim does NOT mention a second marriage.
The Bad Mergentheim records, I do have. Thank you again
Best wishes, David Selig